A Review on Onshore Drilling for Oil and Gas Production with Its Safety Barriers and Well Control Methods

Abstract

Throughout the world, Oil and gas industries are a highly risky platform to work in. There is a high risk of injury to personnel engaged in drilling operations and production of crude oil. During drilling and production of hydrocarbons many operations occur electrically, manually or through the power system, so the probability of occurrence of incidents is very high throughout the process. Some incidents occur in the industries because of unsafe conditions but most of the incidents occur due to unsafe act, lack of knowledge, lack of attention and experience. If in any condition all these factors are not the major reason of the incidents so we have to know what are or could be reasons of incidents in oil and gas industries. So, at the time of working at rig site everybody should know the reason of any failure or any unsafe activity could be and after knowing the reason behind of that some serious precautions and preventive actions or equipment’s should take and available at the time of working at the rig site. The major accidents at the oil and gas rigs are related to pressure underbalance and kick or blowout while performing drilling operations. So, there are some safety barriers that should be available at the rig site during drilling (Durrant in Safety Management in Drilling Operations, [1]). These safety barriers are kind of well control equipment to prevent the unintentional flow from the wellbore and to secure other equipment, rig personnel and the environment etc.